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204552

Sigma-Aldrich

Tellurium dioxide

99.995% trace metals basis

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Synonym(s):
Telluria, Tellurium (IV) oxide, Tellurium oxide
Linear Formula:
TeO2
CAS Number:
Molecular Weight:
159.60
EC Number:
MDL number:
PubChem Substance ID:

Quality Level

Assay

99.995% trace metals basis

mp

733 °C (lit.)

density

5.67 g/mL at 25 °C (lit.)

SMILES string

O=[Te]=O

InChI

1S/O2Te/c1-3-2

InChI key

LAJZODKXOMJMPK-UHFFFAOYSA-N

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1 of 4

This Item
243450863701.12356
Tellurium dioxide 99.995% trace metals basis

Sigma-Aldrich

204552

Tellurium dioxide

Tellurium dioxide ≥99%

Sigma-Aldrich

243450

Tellurium dioxide

Tellurium dioxide ≥97.0%

Sigma-Aldrich

86370

Tellurium dioxide

Tellurium dioxide 99.5+

Sigma-Aldrich

1.12356

Tellurium dioxide

mp

733 °C (lit.)

mp

733 °C (lit.)

mp

733 °C (lit.)

mp

733 °C

density

5.67 g/mL at 25 °C (lit.)

density

5.67 g/mL at 25 °C (lit.)

density

5.67 g/mL at 25 °C (lit.)

density

6.02 g/cm3 at 20 °C

Application

Tellurium dioxide can be used:
  • As a seed layer to fabricate hole-extracting electrodes in an organic photovoltaic device. The addition of TeO2 enhances the optical transmittance of the electrode.
  • As a starting material to prepare tellurite glasses for gamma radiation shielding and other optical applications.

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Inhalation - Aquatic Chronic 2 - Lact. - Repr. 1B - Skin Sens. 1B

Storage Class Code

6.1D - Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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T1503
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25G
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705578-5MG-PW

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MMYOMAG-74K-13

1000309185

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Sankha Chattopadhyay et al.
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine, 68(10), 1967-1969 (2010-05-18)
A simple and inexpensive ion-exchange chromatography method for the separation of medically useful no-carrier-added (nca) iodine radionuclides from bulk amounts of irradiated tellurium dioxide (TeO(2)) target was developed and tested using (131)I. The radiochemical separation was performed using a very
G Bilir et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 83(1), 314-321 (2011-09-20)
TeO(2)-CdF(2)-WO(3) glasses with various compositions and Er(3+) concentrations were prepared by conventional melting method. Their optical properties were studied by measuring the absorption, luminescence spectra and the decay patterns at room temperature. From the optical absorption spectra the Judd-Ofelt parameters
Edmond P F Lee et al.
The Journal of chemical physics, 121(7), 2962-2974 (2004-08-05)
Ab initio calculations have been carried out on low-lying singlet and triplet states of TeO2 at different levels of theory with basis sets of up to the augmented-polarized valence-quintuple-zeta quality. Equilibrium geometrical parameters, harmonic vibrational frequencies, and relative electronic energies
Nirupama Rai et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 76(3-4), 311-314 (2010-05-01)
Frequency upconversion in triply ionized praseodymium doped glass with composition TeO(2)-Na(2)O (TNO) system under the excitation with a laser light from a dye laser has been reported and the covalency, bonding parameter, nephalauxetic effect which provides the information about the
Garima Tripathi et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 71(2), 486-489 (2008-03-14)
The energy transfer in Er3+: Sm3+ codoped binary TeO2-Li2O (TLO) glass has been studied using 532 nm laser radiation on the basis of fluorescence intensity and the lifetime measurements. It is observed that the trace of erbium ion can be

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